打印堆栈信息，方便调试

方式一

import traceback

def test(self):
    try:
        1 / 0
    except BaseException as e:
        msg = traceback.format_exc()
        print(msg)
    finally:
        pass

方式二

import logging

def test(self):
    try:
        1 / 0
    except BaseException as e:
        # msg = traceback.format_exc()
        msg = logging.exception(e)
        print(msg)
    finally:
        pass